I wouldn't mind seeing Iron Man's Marvel Now armour at some point on screen.

I'm with ya there. I mean, I still think of Ironman as Red and Gold. I am not a fan of the new armor still in this movie. Though it's probably just to distinguish it as extremis, if you will, opposed to just word of mouth, so that it's recognizable. Considering ALL of stark's armors in the MCU look similar to the extremis suit, in a way.